Malicious PDF — malware analysis report

Static analysis result for SHA-256 7eb7695b2d5dceeb…

MALICIOUS

PDF

41.7 KB Created: 2020-11-01 09:42:38 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-01-15
MD5: 994f8a66b3e6eed8d70e3b39980696c3 SHA-1: 34a7b80820c5808f81f1fc1737b38d1efcd1e727 SHA-256: 7eb7695b2d5dceebb4c65b6abfaef48720eccb36bca37a2f12911d16cfb8eaff
134 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 4

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://cctraff.ru/aws?keyword=calculating+initiative+5e In PDF document text
    • https://cdn-cms.f-static.net/uploads/4413227/normal_5f9b649a7a935.pdfIn PDF document text
    • https://wekubuzebebam.weebly.com/uploads/1/3/0/7/130739705/mufokojo.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • https://s3.amazonaws.com/bagisi/weather_network_seneca_falls_ny.pdfIn PDF document text
    • https://s3.amazonaws.com/votawawo/73414128467.pdfIn PDF document text
    • https://s3.amazonaws.com/zirojopemup/bemaxiwi.pdfIn PDF document text
    • https://s3.amazonaws.com/likadojivivofu/super_smash_bros_brawl_parents_guide.pdfIn PDF document text
    • https://s3.amazonaws.com/viromibukoleliw/wewirinezumub.pdfIn PDF document text
    • https://s3.amazonaws.com/gomakobez/jelogolofokafutu.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0501/1983/5802/files/somamaraxubokutagotuje.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0504/6363/7703/files/wise_pilgrim_guide_camino_del_norte.pdfIn PDF document text
    • https://s3.amazonaws.com/xebuvuwov/efficacious_novena_to_the_sacred_heart.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off000063ba.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x63BA 4780 bytes
SHA-256: 2be628b5a52eb52bf19bc8010591909d3aae25e5753ebbffc24505a8318a7a9a
font_01_sfnt_off0000741d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x741D 11160 bytes
SHA-256: e175c35f4787c2eee5ad098f59477b2b6e1e99a447030d1778bbf26509b610dd

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